US4637213A - Arrangement for a submarine vehicle - Google Patents

Arrangement for a submarine vehicle Download PDF

Info

Publication number
US4637213A
US4637213A US06/690,055 US69005585A US4637213A US 4637213 A US4637213 A US 4637213A US 69005585 A US69005585 A US 69005585A US 4637213 A US4637213 A US 4637213A
Authority
US
United States
Prior art keywords
compressor
engine
exhaust gases
condenser
power plant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/690,055
Inventor
Hans Lobell
Klas G. Svensson
Goran Gladh
Bjorn Hoglander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Affarsverket FFV
Original Assignee
Affarsverket FFV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Affarsverket FFV filed Critical Affarsverket FFV
Assigned to AFFARSVERKET FFV reassignment AFFARSVERKET FFV ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GLADH, GORAN, HOGLANDER, BJORN, LOBELL, HANS, SVENSSON, KLAS GORAN
Application granted granted Critical
Publication of US4637213A publication Critical patent/US4637213A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B19/00—Marine torpedoes, e.g. launched by surface vessels or submarines; Sea mines having self-propulsion means
    • F42B19/12—Propulsion specially adapted for torpedoes
    • F42B19/14—Propulsion specially adapted for torpedoes by compressed-gas motors
    • F42B19/16—Propulsion specially adapted for torpedoes by compressed-gas motors of cylinder type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
    • B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
    • B63G8/08—Propulsion
    • B63G8/10—Propulsion using steam plant

Definitions

  • the present invention relates to an arrangement for a submarine vehicle, comprising a thermal, steam-powered engine, a condenser for condensing the exhaust given off by the engine, a compressor for compressing a non-condensable fraction of the exhaust, and an exhaust outlet for draining the compressed exhaust fraction into the water surrounding the vessel.
  • the expression submarine vessel is used here to denote primarily, but not exclusively, a torpedo.
  • an arrangement which generates water vapour by burning a fuel, usually a liquid hydrocarbon.
  • the oxygen for the combustion process is taken from an accompanying oxygen supply, for example air, hydrogen peroxide or liquid oxygen.
  • the gases produced by combustion and the water vapour generated at a high temperature are led into the engine and are converted into mechanical work.
  • the exhaust gases from the engine are usually discharged at a point on top of the extreme stern of the torpedo.
  • the gas pressure must be higher than the existing depth pressure. Since the torpedoes must be capable of being used against targets moving at different depths, they are fitted with an adjustable depth regulator. When the torpedo is set for a greater depth, the depth pressure which the exhaust gases must overcome will also be greater. A high back-pressure will reduce the operating efficiency (power output) of the torpedo engine and will increase the noise level due to the fact that the pressure inside the operating cylinder of the engine will be high when the outlet to the sea is opened.
  • the object of the present invention is, therefore, without affecting the efficiency and the power output of the engine, to produce an arrangement of the kind indicated by way of introduction, in which the noise level is significantly reduced.
  • an arrangement for a submarine vehicle includes a thermal, steam-powered engine, a condenser for condensing the exhaust given off by the engine, a compressor for compressing a non-condensable fraction of the exhaust and an exhaust outlet for draining the compressed exhaust fraction into the water surrounding the vessel.
  • the condenser is in the form of a sleeve which encloses both the engine and the compressor.
  • FIG. 1 shows in diagrammatic form the relative arrangement of two operating cylinders and two compressor cylinders with the associated condenser which forms part of one embodiment of the arrangement in accordance with the invention.
  • FIG. 2 shows in diagrammatic form the manner in which the operating cylinders in accordance with FIG. 1 interact with each other with the help of a cam.
  • FIG. 3 shows in perspective view the condenser included in the arrangement in accordance with FIG. 1.
  • FIG. 1 shows a section of the hull 1 of a torpedo.
  • An only partially shown propeller shaft 2 is driven by a thermal engine consisting of a number, being in the example shown six (see FIG. 3), of operating cylinders 3a-f of mutually identical execution, which are positioned in an evenly distributed fashion around the shaft 2.
  • a thermal engine consisting of a number, being in the example shown six (see FIG. 3), of operating cylinders 3a-f of mutually identical execution, which are positioned in an evenly distributed fashion around the shaft 2.
  • FIG. 3 shows an operating piston 4a-f which is connected via a piston rod 5a-f to a compressor piston 6a-f in a compressor cylinder 7a-f. All the compressor cylinders are also of mutually identical execution.
  • the pistons 4a-f and 6a-f are fitted with seals (not shown).
  • each piston being provided with an inclined roller 8a-f (see FIG. 2) which bears against a cam 9 which is common to the rollers 8a-f and which is secured to the propeller shaft 2.
  • the flank 10 of the cam 9 is of sinusoidal form, thereby endowing the pistons 8a-f with a sinusoidal movement.
  • a steam generator 11 is so arranged as to produce a propellant gas channelled to the rear cylinder chambers 13a-f of the operating cylinders via valves 12a-f in a predetermined cycle, for example controlled by an inlet cam (not shown) mounted on the shaft 2.
  • Each of the cylinder chambers 13a-f is connected via its own exhaust valve 14a-f, the opening and closing period of which can be controlled by a cam (not shown) (which may be mounted on the shaft 2) to a condenser 15 of open, tubular form at both ends which is arranged in the longitudinal sense of the vehicle and which fully encloses the operating and compressor cylinders.
  • the inlet and outlet valves 12a-f and 14a-f may as an alternative be replaced by rotary slide valves made of a suitable ceramic material.
  • the condenser 15 consists of an outer and an inner tubular jacket 15a and 15b, between which jackets a large number of axial tubes 15c, cooled internally by means of water, is installed.
  • the condenser 15 thus forms a kind of sleeve which encloses the engine co-axially, as may be appreciated from FIG. 3.
  • Significant sound-deadening is achieved in this way. This sound-deadening is augmented by the fact that the operating and compressor cylinders are combined together in the manner described above.
  • a collecting vessel 16 is provided to receive the condensate from the condenser 15.
  • the condensation water from the condenser 15 is drained off via a connecting pipe 19 to the collecting vessel 16, where the non-condensable fraction of the exhaust gas, usually CO 2 , is separated from the condensate.
  • the condenser is cooled by water which is fed to and from the condenser via pipes 20a and 20b shown here only in part.
  • the cooling water can be taken in a previously disclosed fashion from the surrounding sea waer, whereby no energy need be sacrificed from the function of the condenser.
  • the condensate in the vessel 16 can be pumped by means of a pump 21 back into the propellant gas generating system of the torpedo in a fashion which is not illustrated in detail here.
  • the non-condensable fraction of the exhaust gas can be compressed in one or more stages. According to the embodiment shown here, compression takes place in two stages in the following manner.
  • the engine that is to say the cylinders, the steam generator, the condenser and the associated components, are preferably suspended inside the hull 1 of the torpedo on damping elements (not shown).
  • the condenser 15 is also supported on damping elements 29 and 30 at both its ends, so that a gap 31 is formed between the outside of the condenser and the hull 1 of the torpedo. This gap is either air-filled or is filled with some kind of sound-absorbing material so as further to reduce the noise level.
  • the piston rod 5a-f should preferably be made relatively thin so as to enable it to provide a certain amount of flexibility or springing in a radial sense. In this way any centre deviations between the operating and compressor cylinders will be compensated for, in such a way as to eliminate the risk of undesired noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Exhaust Silencers (AREA)
  • Supercharger (AREA)
  • Compressor (AREA)

Abstract

Arrangement for a thermal, steam-powered engine in a submarine vehicle, for example a torpedo. A condenser is so arranged as to separate the exhaust from the engine into a condensable exhaust fraction and into a non-condensable exhaust fraction. A compressor, which is connected to the engine for the purpose of silencing, is so arranged as to compress only the non-condensable exhaust fraction which, after compression, is discharged through an exhaust outlet into the surrounding sea water. The condenser is in the form of a sleeve which for silencing purposes encloses both the engine and the compressor. A sound-deadening gap is arranged between the condenser and the hull of the vehicle.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an arrangement for a submarine vehicle, comprising a thermal, steam-powered engine, a condenser for condensing the exhaust given off by the engine, a compressor for compressing a non-condensable fraction of the exhaust, and an exhaust outlet for draining the compressed exhaust fraction into the water surrounding the vessel. The expression submarine vessel is used here to denote primarily, but not exclusively, a torpedo.
2. Description of the Prior Art
In conventional submarine torpedos, which are powered by thermal engines, an arrangement is provided which generates water vapour by burning a fuel, usually a liquid hydrocarbon. The oxygen for the combustion process is taken from an accompanying oxygen supply, for example air, hydrogen peroxide or liquid oxygen. The gases produced by combustion and the water vapour generated at a high temperature are led into the engine and are converted into mechanical work. The exhaust gases from the engine are usually discharged at a point on top of the extreme stern of the torpedo.
If the exhaust gases are to leave the torpedo, then the gas pressure must be higher than the existing depth pressure. Since the torpedoes must be capable of being used against targets moving at different depths, they are fitted with an adjustable depth regulator. When the torpedo is set for a greater depth, the depth pressure which the exhaust gases must overcome will also be greater. A high back-pressure will reduce the operating efficiency (power output) of the torpedo engine and will increase the noise level due to the fact that the pressure inside the operating cylinder of the engine will be high when the outlet to the sea is opened.
It has accordingly been proposed, see U.S. Pat. No. 3,973,392, that only the non-condensable fraction of the exhaust gas be drained, instead of draining all the exhaust. Since the former usually constitutes only a small proportion of the exhaust gas, it will consequently be necessary to sacrifice only a very small amount of energy in order to expel the exhaust gas from the torpedo.
It has been found, however, that the noise radiated by the engine is troublesome even in torpedoes of this kind.
SUMMARY OF THE INVENTION
The object of the present invention is, therefore, without affecting the efficiency and the power output of the engine, to produce an arrangement of the kind indicated by way of introduction, in which the noise level is significantly reduced.
This object has been achieved by endowing the arrangement in accordance with the invention with the characteristic features wherein an arrangement for a submarine vehicle includes a thermal, steam-powered engine, a condenser for condensing the exhaust given off by the engine, a compressor for compressing a non-condensable fraction of the exhaust and an exhaust outlet for draining the compressed exhaust fraction into the water surrounding the vessel. The condenser is in the form of a sleeve which encloses both the engine and the compressor.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described in greater detail below with reference to the accompanying drawing, which shows a preferred embodiment of the invention.
FIG. 1 shows in diagrammatic form the relative arrangement of two operating cylinders and two compressor cylinders with the associated condenser which forms part of one embodiment of the arrangement in accordance with the invention.
FIG. 2 shows in diagrammatic form the manner in which the operating cylinders in accordance with FIG. 1 interact with each other with the help of a cam.
FIG. 3 shows in perspective view the condenser included in the arrangement in accordance with FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1 shows a section of the hull 1 of a torpedo. An only partially shown propeller shaft 2 is driven by a thermal engine consisting of a number, being in the example shown six (see FIG. 3), of operating cylinders 3a-f of mutually identical execution, which are positioned in an evenly distributed fashion around the shaft 2. For technical reasons to do with the drawing, only the cylinders 3a and 3d are shown in FIG. 1. Each cylinder 3a-f has an operating piston 4a-f which is connected via a piston rod 5a-f to a compressor piston 6a-f in a compressor cylinder 7a-f. All the compressor cylinders are also of mutually identical execution. The pistons 4a-f and 6a-f are fitted with seals (not shown).
The pistons 4a-f interact with each other by each piston being provided with an inclined roller 8a-f (see FIG. 2) which bears against a cam 9 which is common to the rollers 8a-f and which is secured to the propeller shaft 2. The flank 10 of the cam 9 is of sinusoidal form, thereby endowing the pistons 8a-f with a sinusoidal movement.
A steam generator 11 is so arranged as to produce a propellant gas channelled to the rear cylinder chambers 13a-f of the operating cylinders via valves 12a-f in a predetermined cycle, for example controlled by an inlet cam (not shown) mounted on the shaft 2.
Each of the cylinder chambers 13a-f is connected via its own exhaust valve 14a-f, the opening and closing period of which can be controlled by a cam (not shown) (which may be mounted on the shaft 2) to a condenser 15 of open, tubular form at both ends which is arranged in the longitudinal sense of the vehicle and which fully encloses the operating and compressor cylinders.
The inlet and outlet valves 12a-f and 14a-f may as an alternative be replaced by rotary slide valves made of a suitable ceramic material.
The condenser 15 consists of an outer and an inner tubular jacket 15a and 15b, between which jackets a large number of axial tubes 15c, cooled internally by means of water, is installed. The condenser 15 thus forms a kind of sleeve which encloses the engine co-axially, as may be appreciated from FIG. 3. Significant sound-deadening is achieved in this way. This sound-deadening is augmented by the fact that the operating and compressor cylinders are combined together in the manner described above.
A collecting vessel 16 is provided to receive the condensate from the condenser 15.
The function of the arrangement is as follows.
When propellant gas enters the cylinder chamber 13a, the piston 4a moves over its operating stroke to the right in FIG. 1, that is to say in the direction of the arrow 17 in FIG. 2. The power is transmitted via the roller 8a to the cam 9 in such a way that the latter is caused to rotate in the direction of the arrow 18 (see FIG. 2) and to drive the propeller shaft 2.
When the piston 4a then moves over its return stroke to the left in FIG. 1, the exhaust gas is expelled from the cylinder chamber 13a via the valve 14a and into the condenser 15.
The condensation water from the condenser 15 is drained off via a connecting pipe 19 to the collecting vessel 16, where the non-condensable fraction of the exhaust gas, usually CO2, is separated from the condensate. The condenser is cooled by water which is fed to and from the condenser via pipes 20a and 20b shown here only in part. The cooling water can be taken in a previously disclosed fashion from the surrounding sea waer, whereby no energy need be sacrificed from the function of the condenser. The condensate in the vessel 16 can be pumped by means of a pump 21 back into the propellant gas generating system of the torpedo in a fashion which is not illustrated in detail here.
The non-condensable fraction of the exhaust gas can be compressed in one or more stages. According to the embodiment shown here, compression takes place in two stages in the following manner.
As the piston 4a moves to the left in FIG. 1, the exhaust gas (CO2) is sucked from the vessel 16 through a non-return valve 22a which opens into the front cylinder chamber 23a of the cylinder 7a. As the piston 4a then moves to the right, the exhaust gas is compressed in the cylinder chamber 23a, causing it to flow through the channel 24a in the piston 6a via an open non-return valve 25a and into the rear cylinder chamber 26a of the cylinder 7a. When the piston 6a subsequently moves to the left, the exhaust gas in the cylinder chamber 26a is compressed to a pressure which exceeds the depth pressure of the surrounding water and is forced through a non-return valve 27 to an exhaust outlet 28 in the hull 1, through which the fraction of the exhaust gas thus compressed is released into the surrounding water.
The engine, that is to say the cylinders, the steam generator, the condenser and the associated components, are preferably suspended inside the hull 1 of the torpedo on damping elements (not shown). The condenser 15 is also supported on damping elements 29 and 30 at both its ends, so that a gap 31 is formed between the outside of the condenser and the hull 1 of the torpedo. This gap is either air-filled or is filled with some kind of sound-absorbing material so as further to reduce the noise level.
The piston rod 5a-f should preferably be made relatively thin so as to enable it to provide a certain amount of flexibility or springing in a radial sense. In this way any centre deviations between the operating and compressor cylinders will be compensated for, in such a way as to eliminate the risk of undesired noise.

Claims (6)

What is claimed is:
1. In a power plant for a submarine vehicle, a thermal engine, said engine having at least one operating cylinder and an exhaust gas outlet, an operating piston reciprocatable within said operating cylinder, compressor means for compressing exhaust gases from said engine, said compressor means having at least one compressor cylinder and an exhaust gas outlet, a compressor piston reciprocatable within said compressor cylinder, said compressor piston connected to said operating piston, and means for drainage of compressed exhaust gases from said compressor into the water surrounding said vehicle, said operating piston and said compressor piston being interconnected by means of a flexible piston rod.
2. A power plant for a submarine vehicle according to claim 1, said power plant including
means for collecting exhaust gases from said engine,
condenser means for condensing exhaust gases collected by said collecting means,
means for separation of non-condensable exhaust gases from said condenser means,
said compressor means being operative for compressing said non-condensable exhaust gases.
3. A power plant for a submarine vehicle according to claim 1, said power plant including,
condenser means for condensing exhaust gases from said engine,
said condenser means being in the form of a sleeve and mounted longitudinally of said vehicle,
said engine and said compressor means being both mounted within said sleeve.
4. In a power plant for a submarine vehicle, a thermal engine, said engine having at least one operating cylinder and an exhaust gas outlet, an operating piston reciprocatable within said operating cylinder, compressor means for compressing exhaust gases from said engine, said compressor means having at least one compressor cylinder and an exhaust gas outlet, a compressor piston reciprocatable within said compressor cylinder, said compressor piston connected to said operating piston, and means for drainage of compressed exhaust gases from said compressor into the water surrounding said vehicle, said engine having a hull, a condenser sleeve spaced inwardly of said hull in order to define a gap therebetween, said gap containing noise-reducing means.
5. A power plant for a submarine vehicle according to claim 4, said power plant including,
means for collecting exhaust gases from said engine,
condenser means for condensing exhaust gases collected by said collecting means,
means for separation of non-condensable exhaust gases from said condenser means,
said compressor means being operative for compressing said non-condensable exhaust gases.
6. A power plant for a submarine vehicle according to claim 4, said power plant including,
condenser means for condensing exhaust gases from said engine,
said condenser means being in the form of a sleeve and mounted longitudinally of said vehicle,
said engine and said compressor means being both mounted within said sleeve.
US06/690,055 1984-01-12 1985-01-09 Arrangement for a submarine vehicle Expired - Lifetime US4637213A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8400134A SE436448B (en) 1984-01-12 1984-01-12 DRIVING DEVICE AT AN UNDERGRADUATE COST, PRELIMINARY A TORPED
SE8400134 1984-04-12

Publications (1)

Publication Number Publication Date
US4637213A true US4637213A (en) 1987-01-20

Family

ID=20354280

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/690,055 Expired - Lifetime US4637213A (en) 1984-01-12 1985-01-09 Arrangement for a submarine vehicle

Country Status (4)

Country Link
US (1) US4637213A (en)
EP (1) EP0156969B1 (en)
DE (1) DE3463177D1 (en)
SE (1) SE436448B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756264A (en) * 1986-12-22 1988-07-12 Sundstrand Corporation Noise damping system for torpedoes or the like
US5117635A (en) * 1990-08-06 1992-06-02 Westinghouse Electric Corp. High power density propulsion/power system for underwater applications
US20150251741A1 (en) * 2014-03-10 2015-09-10 The Boeing Company Autonomous power generation in submersible environments
US10539397B2 (en) * 2017-04-12 2020-01-21 Wilcox Industries Corp. Modular underwater torpedo system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US265423A (en) * 1882-10-03 Method of operating gas-engines in torpedo-boats
US1236793A (en) * 1916-01-10 1917-08-14 Keller Mechanical Engraving Company Power-generator.
US1291355A (en) * 1917-03-28 1919-01-14 Electric Boat Co Submarine boat.
GB579125A (en) * 1939-10-31 1946-07-24 Milo Ab Improvements in or relating to power-plants for submarines and the like
US3069527A (en) * 1959-09-08 1962-12-18 Thompson Ramo Wooldridge Inc Vapor generator utilizing heat of fusion
US3145678A (en) * 1961-11-21 1964-08-25 John G Shmorhun Torpedo motor mounting structure
US3838658A (en) * 1973-04-17 1974-10-01 Us Navy Steady heat generating reactor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE308533C (en) *
US2325619A (en) * 1939-10-03 1943-08-03 Lysholm Alf Power plant for submarines and the like
DE811518C (en) * 1949-06-14 1951-08-20 Participations Eau Soc Et Free-flight piston machine with at least a two-stage compressor part
SE391235B (en) * 1973-10-10 1977-02-07 Foerenade Fabriksverken DEVICE FOR PRESSURE FEEDING OF FUEL TO A MACHINERY IN AN UNDERWATER BODY

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US265423A (en) * 1882-10-03 Method of operating gas-engines in torpedo-boats
US1236793A (en) * 1916-01-10 1917-08-14 Keller Mechanical Engraving Company Power-generator.
US1291355A (en) * 1917-03-28 1919-01-14 Electric Boat Co Submarine boat.
GB579125A (en) * 1939-10-31 1946-07-24 Milo Ab Improvements in or relating to power-plants for submarines and the like
US3069527A (en) * 1959-09-08 1962-12-18 Thompson Ramo Wooldridge Inc Vapor generator utilizing heat of fusion
US3145678A (en) * 1961-11-21 1964-08-25 John G Shmorhun Torpedo motor mounting structure
US3838658A (en) * 1973-04-17 1974-10-01 Us Navy Steady heat generating reactor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756264A (en) * 1986-12-22 1988-07-12 Sundstrand Corporation Noise damping system for torpedoes or the like
US5117635A (en) * 1990-08-06 1992-06-02 Westinghouse Electric Corp. High power density propulsion/power system for underwater applications
US20150251741A1 (en) * 2014-03-10 2015-09-10 The Boeing Company Autonomous power generation in submersible environments
US9452814B2 (en) * 2014-03-10 2016-09-27 The Boeing Company Autonomous power generation in submersible environments
US10539397B2 (en) * 2017-04-12 2020-01-21 Wilcox Industries Corp. Modular underwater torpedo system
US11168960B2 (en) 2017-04-12 2021-11-09 Wilcox Industries Corp. Modular underwater torpedo system

Also Published As

Publication number Publication date
EP0156969A1 (en) 1985-10-09
SE8400134D0 (en) 1984-01-12
EP0156969B1 (en) 1987-04-15
SE436448B (en) 1984-12-10
DE3463177D1 (en) 1987-05-21

Similar Documents

Publication Publication Date Title
MX167670B (en) PROCESS FOR THE COMPRESSION RELIEF DELAY OF A COMBUSTION ENGINE
US4637213A (en) Arrangement for a submarine vehicle
US1411226A (en) Utilizing the energy of the exhaust of engines
US3188805A (en) Internal combustion engine
US1601995A (en) Engine
US982850A (en) Internal-combustion steam-motor.
US1489004A (en) Internal-combustion engine
US1298430A (en) Internal-combustion turbine.
US1044392A (en) Compound engine.
US2361952A (en) Prime mover
US1145391A (en) Internal-combustion engine.
US647651A (en) Gas-engine.
US2604934A (en) Pressure combustion and compressor
US1406700A (en) Steam engine
US1172992A (en) Submarine.
US1005680A (en) Explosion cycle and motor of atmospheric type.
US1632157A (en) Internal-combustion turbine
US2966887A (en) High temperature piston engines
US687152A (en) Internal-combustion engine.
US1387408A (en) Internal-combustion engine
SU994668A1 (en) Gas generator
US4489560A (en) Compound internal combustion engine and method for its use
US20050047935A1 (en) Steam powered free piston pump
US970063A (en) Internal-combustion engine.
SU1004660A1 (en) Ship power unit

Legal Events

Date Code Title Description
AS Assignment

Owner name: AFFARSVERKET FFV S-631 87 ESKILSTUNA, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:LOBELL, HANS;SVENSSON, KLAS GORAN;GLADH, GORAN;AND OTHERS;REEL/FRAME:004375/0880

Effective date: 19841123

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12